<template>
          <div class="login_container">
               <div class="login_box">
                    <div class="avater_box">
                         <img src="../assets/logo.png" alt="">
                    </div>
                    <!-- form表单 -->
               <el-form ref="loginFormRef" label-width="0px" class="login_form" :model="loginForm" :rules="loginFormRule">
                         <!-- 用户名 -->
                    <el-form-item prop="username">
                         <el-input  prefix-icon="iconfont icon-user" v-model="loginForm.username"></el-input>
                    </el-form-item>
                    <!-- 密码 -->
                    <el-form-item prop="password">
                         <el-input  prefix-icon="iconfont icon-3702mima" v-model="loginForm.password"></el-input>
                    </el-form-item>
                    <!-- 按钮 -->
                    <el-form-item class="btns">
                         <el-button type="primary" @click="login">登陆</el-button>
                         <el-button type="info" @click="resetLoginForm">重置</el-button>
                    </el-form-item>
               </el-form>
               </div>              
          </div>
</template>

<script>
export default {
    data(){
         return {
              loginForm:{
                   username:'admin',
                   password:'123456'
              },
              loginFormRule:{
                   username:[
                        { required: true, message: '请输入登陆名称', trigger: 'blur' },
                        { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                   ],
                   password:[
                         { required: true, message: '请输入登陆密码', trigger: 'blur' },
                         { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                   ]
              }
         }
    },
    methods:{
         resetLoginForm(){
              this.$refs.loginFormRef.resetFields()   
         },
         login(){
              this.$refs.loginFormRef.validate(async valid => {
                 if(!valid) return  this.$message.error('效验失败');//效验失败终止后续代码执行
                 const {data :res}=await this.$http.post('login',this.loginForm)
                 if(res.meta.status !==200) return  this.$message.error('登陆失败');
                 this.$message.success('登陆成功');
                 console.log(res);
          
                 window.sessionStorage.setItem('token',res.data.token)  
                 this.$router.push('/home')             
              })
         }
     }
}
</script>

<style lang="less" scoped>
     .login_container {
          background-color: #2b4b6b;
          height: 100%;
     }
     .login_box {
               width: 450px;
               height: 300px;
               position: absolute;
               left: 50%;
               top: 50%;
               transform: translate(-50%,-50%);
               background-color: #fff;
               .avater_box {
                    height: 130px;
                    width: 130px;
                    border: 1px solid #eee;
                    background: #fff;
                    border-radius: 50%; 
                    position: absolute;
                    padding: 10px;
                    /* 阴影 */
                    box-shadow: 0 0 10px #ddd;
                    left: 50%;
                    transform: translate(-50%,-50%);
                   img {
                    width: 100%;
                    height: 100%;
                    border-radius: 50%;
                    background-color: #eee; 
                    }                   
               }
               
          }
.login_form {
     width: 100%;
     position: absolute;
     bottom: 0px;
     padding: 0 20px;
     box-sizing: border-box;
}
.btns {
     display: flex;
     justify-content: flex-end;
}
</style>